Servohydraulic Testing Machine HC from 10 to 25 kN

Table-Top Model, Actuator in the Upper Crosshead 

While the HA and HB models are floor-standing, allowing equipment assembly at an optimum operating height, the HC models (10 to 25 kN) are table-top models. They can be positioned on a workbench, for example. A concrete base can optionally be supplied as a support. With all HC models the actuator is positioned above the test area, which is equipped with a T-slotted platform.

The test frame features extremely high stiffness, resulting in natural resonance. To avoid unwanted flexural stresses in the specimen the load frames are accurately aligned.

HC25 fatigue life testing machine on concrete base for ergonomic testing

Advantages & Features

  • 2-column frame for dynamic tests up to 25kN.
  • Testing actuator located in upper crosshead.
  • Suitable for 10 kN and 25 kN axial actuators.
  • Suitable for combined tensile and compression/torsion actuator with maximum torque of 250 Nm.
  • Hard-chromed T-slotted platform and columns for tests in corrosive media.
  • The entire test, together with set-up and control of automatic extensometers and specimen grips, is run via the display-equipped remote control unit.
  • Wide accessory range: temperature chamber, compression platens, specimen grips, flexure test kit etc.
  • Optional hydraulic adjustment for easy positioning of upper crosshead.
  • Safety housing for compliance with CE Machinery Directive depending on application.

Technical Data

Test area height

Standard

Extended by 250 mm

Extended by 500 mm

Dynamic nominal force

25

25

25

kN

A – max. height of test frame

1325

1575

1825

mm

AG100 – max. test-frame height with 100mm-stroke actuator

1865

2115

2365

mm

AG250 – max. test-frame height with 250mm-stroke actuator

2165

2415

2665

mm

B – max. width of test frame

660

660

660

mm

C – max. depth of test frame

450

450

450

mm

D1 – distance between columns

460

460

460

mm

E – column diameter

65

65

65

mm

F – height of top edge of lower crosshead

75

75

75

mm

G – max. test area height[1]

1070

1320

1570

mm

H – max. working test area height[2]

310 to 1010

560 ... 1260

810 to 1510

mm

J – crosshead adjustment path[3]

700

700

700

mm

K – weight[4]

300

315

330

kg

Frame stiffness at 1000mm crosshead separation

300

300

300

kN/mm

Clamping/ adjustment: manual/manual

1037238

1037462

1037469

Clamping/ adjustment: manual/hydraulic

1036930

1036931

1037473

  1. Distance between upper and lower crossheads
  1. Distance between piston flange and base crosshead with piston retracted
  1. For frames with hydraulic adjustment only
  1. Weight without actuator, load cell, or any fixtures

Video

1:14

Testing of spinal implants with a servohydraulic testing machine

Fatigue test on spinal implant with a ZwickRoell servo-hydraulic testing machine (H10) according to ISO 12189, ASTMT 2077, ASTM F 2347

Servohydraulic Components

Description

The final element in our dynamic testing product portfolio is the manufacture of all the necessary accessories such as hydraulic power packs, servohydraulic testing actuators, or hydraulic distribution units. Our portfolio is constantly being expanded through a program of continuous development and inclusion of new products, allowing us to satisfy our customer’s most demanding quality requirements while continually improving the quality of our products.

Hydraulic Power Packs

Hydraulic power pack 40 l/min without noise protection

The HP series power packs feature high operational reliability and long service life. All components are mounted on top of the oil tank for easy access.

The self-priming radial-piston pump is driven by an asynchronous motor. The nine pistons are in hydrostatically balanced contact with the stroke ring. Flow rate is regulated by the stroke-ring eccentricity, which is adjusted via two control pistons located opposite each other. The pressurized oil is routed via a high-pressure filter and is then available to the appliance. A factory-set pressure relief valve prevents excessive increases in pressure.

Servohydraulic Testing Actuator

Testing actuator LH2500
ZwickRoell's servohydraulic testing actuators feature sturdy, robust construction and are used both in servohydraulic testing machines and as single testing actuators, for example on a clamping plate. When used in conjunction with a servo valve they enable complex loading sequences to be implemented with great accuracy. 

Hydraulic Distribution Unit

Distribution unit
The hydraulic distribution unit is the electrically operated switching device in servohydraulic testing machines. It connects or disconnects the hydraulic pressure for a servohydraulic testing actuator or servohydraulic testing machine. A connecting valve is allocated to each consumer, allowing them to be switched independently of each other. The modular design enables addition of an extra switching manifold whenever required.

Downloads

New fatigue testing machine for the University of Freiburg

At the Department of Sustainable Systems Engineering (INATECH) at the Albert Ludwigs University of Freiburg, engineering solutions are sought in the context of current challenges in sustainable development. The main areas of focus currently include sustainable materials, energy systems and the resilience of technical systems. In the context of mechanical materials testing, INATECH uses a servohydraulic testing machine from ZwickRoell for its research work.
ZwickRoell HC25
Top